Note 15 - Commitments and Contingencies (Details Textual) - USD ($) |
Sep. 30, 2022 |
Apr. 01, 2022 |
Sep. 30, 2021 |
Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2018 |
|---|---|---|---|---|---|---|
| Lessee, Operating Lease, Term of Contract | 3 years | |||||
| Accrued Rent | $ 21,000 | $ 42,000 | $ 42,000 | $ 39,600 | $ 38,400 | |
| Operating Lease, Monthly Rent Payment Obligation | $ 3,500 | |||||
| Operating Lease, Liability, Total | 0 | 0 | ||||
| Operating Lease, Right-of-Use Asset | $ 0 | $ 0 | ||||
| Patents [Member] | ||||||
| Finite-Lived Intangible Asset, Useful Life | 20 years | |||||
| M I T Licensing Agreement [Member] | ||||||
| Contractual Obligation | $ 50,000 |
| X | ||||||||||
- Definition Represents monthly rent payment obligation for operating lease. No definition available.
|
| X | ||||||||||
- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for contractual rent under lease arrangements. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of contractual obligation, including, but not limited to, long-term debt, lease obligation, purchase obligation, and other commitments. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
|
| X | ||||||||||
- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Present value of lessee's discounted obligation for lease payments from operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of lessee's right to use underlying asset under operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|